Authors:
Aintzane Fayanás (1,2), Nerea Ordás (1,2), Isaac Valls (3), Ernesto Urionabarrenetxea (1,2), Íñigo Iturriza (1,2), Ángela Veiga (1,2)
1- Ceit-Basque Research and Technology Alliance (BRTA), Manuel Lardizabal 15, 20018, Donostia / San Sebastián, España
2- Universidad de Navarra, Tecnun, Manuel Lardizabal 13, 20018, Donostia / San Sebastián, España
3- Rovalma, S.A, Carrer Collita, 08191 Rubí (Barcelona), España
Abstract:
In this work, the feasibility of Powder Metallurgy (PM) routes as processing methods for Nickel-Aluminium Bronze (NAB) alloys have been studied to produce components with good mechanical properties and corrosion resistance for the marine industry. Conventional PM (compaction and sintering) and PM-HIP (Hot Isostatic Pressing of encapsulated powder) have been explored to obtain fully dense NAB from gas atomised powder with Cu-9Al-4.5Ni-4.1Fe-0.9Mn (wt.%) composition. The results show that an adequate selection of raw materials and process parameters lead to fully dense materials with a microstructure similar to that of a NAB alloy produced by conventional production process. Final heat treatments are responsible for further microstructural refinement and dissolution of detrimental brittle phases, like retained martensitic β.
DOI:
https://doi.org/10.59499/EP235768755